Pronterface is a free 3D printer controller software for RepRap 3D printers developed by 

Please, download the latest version from github

Printrun consists of printcore, pronsole and pronterface, and a small collection of helpful scripts.

  • is a library that makes writing reprap hosts easy
  • is an interactive command-line host software with tabcompletion goodness
  • is a graphical host software with the same functionality as pronsole
  • is a browser-usable remote control function for Pronterface


This section suggests using precompiled binaries, this way you get everything bundled into one single package for an easy installation.

If you want the newest, shiniest features, you can run Printrun from source using the instructions further down this README.


A precompiled version is available at

Mac OS X

A precompiled version is available at



You can run Printrun directly from source, as there are no packages available yet. Fetch and install the dependencies using

sudo apt-get install python-serial python-wxgtk2.8 python-pyglet

Fedora 15 and newer

You can run Printrun directly from source, as there are no packages available yet. Fetch and install the dependencies using

sudo yum install pyserial wxpython pyglet


Packages are available in AUR. Just run

yaourt printrun

and enjoy the pronterfacepronsole, … commands directly.


When you’re done setting up Printrun, you can start in the directory you unpacked it. Select the port name you are using from the first drop-down, select your baud rate, and hit connect. Load an STL (see the note on skeinforge below) or GCODE file, and you can upload it to SD or print it directly. The “monitor printer” function, when enabled, checks the printer state (temperatures, SD print progress) every 3 seconds. The command box recognizes all pronsole commands, but has no tabcompletion.

If you want to load stl files, you need to install a slicing program such as Slic3r and add its path to the settings. See the Slic3r readme for more details on integration.

Using the browser interface

To run the web interface, install Cherrypy and run Pronterface as described above. The www server will start on the port/address you have chosen.

Webinterface Dependencies

Cherrypy is required for the web interface. Download and install it by opening a command prompt in its directory and running python install.

Webinterface Configuration

  • The Web interface port / ip is configurable in http.config
  • The Default User / Password can be set in auth.config

Webinterface Styling

  • css/style.css can be modified to change the style of the Web Interface.


To use pronsole, you need:

  • python (ideally 2.6.x or 2.7.x),
  • pyserial (or python-serial on ubuntu/debian) and
  • pyreadline (not needed on Linux)

Start pronsole and you will be greeted with a command prompt. Type help to view the available commands. All commands have internal help, which you can access by typing “help commandname”, for example “help connect”

If you want to load stl files, you need to put a version of skeinforge (doesn’t matter which one) in a folder called “skeinforge”. The “skeinforge” folder must be in the same folder as


To use printcore you need python (ideally 2.6.x or 2.7.x) and pyserial (or python-serial on ubuntu/debian) See pronsole for an example of a full-featured host, the bottom of for a simple command-line sender, or the following code example:

p.startprint(data) # data is an array of gcode lines
p.send_now("M105") # sends M105 as soon as possible


Run Printrun for source if you want to test out the latest features.


To use pronterface, you need:

  • python (ideally 2.6.x or 2.7.x),
  • pyserial (or python-serial on ubuntu/debian),
  • pyglet
  • pyreadline (not needed on Linux) and
  • wxPython

Please see specific instructions for Windows and Mac OS X below. Under Linux, you should use your package manager directly (see the “GETTING PRINTRUN” section)


Download the following, and install in this order:


For the last one, you will need to unpack it, open a command terminal, go into the the directory you unpacked it in and runpython install

Mac OS X Lion

  1. Ensure that the active Python is the system version. (brew uninstall python or other appropriate incantations)
  2. Download an install [wxPython2.8-osx-unicode] matching to your python version (most likely 2.7 on Lion, check with: python –version) from: Known to work PythonWX:
  3. Download and unpack pyserial from
  4. In a terminal, change to the folder you unzipped to, then type in: sudo python install
  5. Repeat 4. with http://

The tools will probably run just fine in 64bit on Lion, you don’t need to mess with any of the 32bit settings. In case they don’t, try

  1. export VERSIONER_PYTHON_PREFER_32_BIT=yes in a terminal before running Pronterface

Mac OS X (pre Lion)

A precompiled version is available at

  1. Download and install
  2. Grab the source for pyserial from
  3. Unzip pyserial to a folder. Then, in a terminal, change to the folder you unzipped to, then type in:defaults write Prefer-32-Bit -bool yessudo python install

Alternatively, you can run python in 32 bit mode by setting the following environment variable before running the command:

This alternative approach is confirmed to work on Mac OS X 10.6.8.


sudo python install

Then repeat the same with http://


Printrun is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

Printrun is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with Printrun.  If not, see <>.

All scripts should contain this license note, if not, feel free to ask us. Please note that files where it is difficult to state this license note (such as images) are distributed under the same terms.